On Apr 28, 2015, at 6:46 PM, Eric NO3M <[email protected]> wrote: > K3 is ready now I thought... transmits 1mW out of the transverter port at > 630M. At least one of the experimental guys is doing so w/ the new synths. > Only an amplifier is needed, depending on how much power you want to put out > or need to reach the EIRP limit.
Correct. You need the KBPF3 and KXV3 options, and output is somewhere around 0.5-1.0 mW, varying a bit with the radio. Wayne N6KR > > Long antenna? Tower? Not necessary. The proposed power limit is 5W EIRP (or > 1W EIRP in parts of AK if within 800km of Russia). As such, you could in > theory put up anything and adjust your transmitter output to reach the EIRP > limit. It levels the playing field for everyone, whether you have a 10 ft > stick, 200ft top-loaded tower, or a phased array. No one antenna *should* > radiate any more power in a given direction if the EIRP restriction is > followed correctly. 67ft top-loaded vertical + 75-100W output (~5-8W ERP) > has gotten me QSOs all over the US, including CW to the west coast. Work on > your RX antenna(s) before worrying about the TX antenna on LF/MF..... esp > with an EIRP limit. > > 73 Eric NO3M > WG2XJM (Part 5 2200m + 630m) > > > On 04/28/2015 08:18 PM, Fred Jensen wrote: >> On 4/28/2015 5:02 PM, Jim Lowman wrote: >>> I heard elsewhere that Elecraft is ready for 630m when the FCC gives >>> final approval. >>> I know that the K3 will receive on that band, but what will be needed to >>> be able to transmit there (other than a very long antenna)? >> >> Ummm ... don't know. Just because it receives very well down there [with the >> KBPF3], TX may require some mods to the filters, HW or FW. I'm pretty sure >> it will happen if the FCC ever acts. My K3 receives very well on 630 m. >> Most antennas at 630 m are verticals, we will all have to decide: a) how >> much can we afford in a tower; and b) what will the HOA accept as >> "reasonable accommodation." :-) >>> >>> How about the 2200m band? Is the K3 receiver sensitivity good enough, >>> that low in frequency? >> >> Wayne has already made it clear that MF/LF sensitivity falls off steadily >> below 300 KHz. I'm going to keep WSPR running on 137 KHZ for awhile, but >> I'm not holding my breath. Sensitivity seems to go down as stated, noise >> here rises dramatically. Honestly, I think expecting a radio to work >> perfectly from 100 KHz to 50,000 KHz is like asking the government to never >> make a misteak. >> >> 73, >> >> Fred K6DGW >> - Northern California Contest Club >> - CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015 >> - www.cqp.org >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
